/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.lvyh.lightframe.sharding.client.strategy;


import com.lvyh.lightframe.sharding.client.common.DataTableInfo;
import com.lvyh.lightframe.sharding.client.util.DateUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.text.ParseException;

public class RangeShardingStrategy implements ShardingStrategy {

    private Logger logger = LoggerFactory.getLogger(this.getClass());

    @Override
    public DataTableInfo doShard(String logicDsKey, String logicTableName, Object shardingValue, int tableShardNum, int dbShardNum) {
        try {
            DateUtils.parseDate(shardingValue.toString(), DateUtils.DATE_FORMAT_19);
        } catch (ParseException ex) {
            logger.error("Date format does not meet the requirements! Passed in parameter: {}, correct format: {}", shardingValue.toString(), DateUtils.DATE_FORMAT_19);
            return new DataTableInfo(logicDsKey, logicDsKey);
        }

        String replace = shardingValue.toString().substring(0, 7).replace("-", "");
        String phsicalTableName = logicTableName + "_" + replace;
        return new DataTableInfo(logicDsKey, phsicalTableName);
    }

}
